PHP/JS: Codeigniter Ajax

gistfile1

<?php

/* CI AJAX */

public function index( $output_type ){
	
	// the main controller logic...

	switch( $output_type ){

		case( 'JSON' ): $this->load->view( 'JSON/simple' , array('JSON'=>$view_data) );
		break;

		default: $this->load->view( 'regular_page', $view_data );

	}

}

?>

<script>

/* AJAX */

var base_url = $('base').attr('href'); // Assumes html contains a base element indicating the base url


	$( 'form.ajax' ).live( 'submit', function(){ // Using the live function allows the form to be retrieved even if it's created after the original DOM load.

		var action_url = base_url + $( this ).attr( 'action' ); // Assumes the same controller that handles the form w/o ajax will handle it with ajax.
		/*console.log(action_url);*/

		$.ajax({

	      url: action_url+'/json', /* Assumes the controller accepts the final parameter as an output type switch */
	      
	      type: 'POST',
	      
	      data: "key1="+$( this ).children( 'input[name=key1]' ).val()+"&key2="+$( this ).children( 'input[name=key2]' ).val(),
	      
	      async: false,
	      
	      success: function( response ) {

	          ajaxOutput = $.parseJSON( response );

	      }
	     
	  	});

	  /* console.log(ajaxOutput); */
	  if( ajaxOutput.success=='TRUE' ){ /* Assumes JSON contains a success property */
	  	
	  	console.log(ajaxOutput);

	  }else{
	  	
	  	console.log(ajaxOutput);

	  }
	  	
	  return false; // Prevents form submitting

	});
</script>